Hydrogen production via dry reforming of methane over Ni-Fe-Al catalysts
International audience
Materials Literature
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Исследование теплоемкости металлических материалов с покрытием методом лазерной вспышки // Study of the Heat Capacity of Coated Metal Materials Using Laser Flash Method
Results of laser flash measurements of the specific heat of the samples of metallic materials (stainless steel 12X18H9T, VZhM-4 nickel superalloy) coated with heat-resistant silicate enamel within a temperature range 20 - 1300 °C are presented. Within the specified temperature range the coating is characterized by hig…
Исследование теплоемкости металлических материалов с покрытием методом лазерной вспышки
Results of laser flash measurements of the specific heat of the samples of metallic materials (stainless steel 12X18H9T, VZhM-4 nickel superalloy) coated with heat-resistant silicate enamel within a temperature range 20 - 1300 °C are presented. Within the specified temperature range the coating is characterized by hig…
A general semi-analytic approach to determine the effective interfacial conditions for 2D and 3D-stokes flow on an arbitrary rough solid surface
International audience
Эффекты упругопластического деформирования и ползучести в резьбовых соединениях
The specificity of loading conditions responsible for threaded connections of power equipment is demonstrated. Different approaches to the determination of their stress-strain states, attributed to a redistribution of stresses and strains in the threads under static and low-cycle loading are considered. The developed…
Characterization of the Local Incremental Permeability of a Ferromagnetic Plate Based on a Four Needles Technique
International audience
Влияние эксплуатационных факторов на структуру материала змеевиков технологических трубчатых печей
The impact of operational factors (long-term operation; standby modes; violation of technological regimes leading to the equipment failure) on the structure of internal and external surfaces of the furnace tubing coils made of chrome-molybdenum and chrome-nickel steels is considered. Attention is drawn to the non-unif…
Change of Internal Friction on Magnesium Alloy Depending on the Temperature and the Use of Mathematical Methods in the Evaluation of This Property
The article is aimed on present research of internal friction mechanisms that are responsible for the temperature behaviour of AZ91 magnesium alloys. These mechanisms have been studied by ultrasonic resonant apparatus at a frequency close to 20470 Hz and in a temperature range from 50 °C up to 400 °C. The specimen on…
Al Microparticles Interaction with Epoxy Resin - Cohesion and Adhesion to Steel and Aluminum
Aluminium is among the materials that found their application in composite systems. Aluminium matrix composites may form or may be present in the matrix in the form of fillers. Specific applications of aluminium may be present in the epoxy or other polymer matrices in the form of microparticles. Mutual interaction of…
Preclinical characterization of PEGASEMP™ nanomedicine and regulatory framework
Monografia realizada no âmbito da unidade Estágio Curricular do Mestrado Integrado em Ciências Farmacêuticas, apresentada à Faculdade de Farmácia da Universidade de Coimbra
Heterogeneous Oxidation of Atmospheric Organic Aerosol: Kinetics of Changes to the Amount and Oxidation State of Particle-Phase Organic Carbon
Atmospheric oxidation reactions are known to affect the chemical composition of organic aerosol (OA) particles over timescales of several days, but the details of such oxidative aging reactions are poorly understood. In this study we examine the rates and products of a key class of aging reaction, the heterogeneous ox…
Cathodoluminescence of Moldavites
A systematic study of a large set of moldavites and the application of cathodoluminescence (CL)-spectroscopy with a detailed discussion of spectral features is presented. Optical CL microscopy and spectroscopy (OM-CL) were performed on 57 moldavite samples from different substrewn-fields in Germany and the Czech Repub…
Shakedown of elastic-perfectly plastic materials with temperature-dependent elastic moduli
International audience
Příprava a charakterizace nanokompozitních tenkých filmů s využitím v organické elektronice
In this work, the recently obtained experimental results in the field of bandgap engineered nano ZnO/MEH-PPV (poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene]) are presented, mainly thin nanocomposite films preparation, their electronic structure and properties characterization and implementation of them as a…
Vliv beta záření na mikro-tvrdost polymerů
The study deals with the influence of electron beam radiation in the doses of 0, 66, 99 and 132 kGy on micro-mechanical properties of polymers, especially polyamide 6 filled with 1 - 6 wt. % of crosslinking agent triallylisocyanurate (TAIC). Indentation hardness, indentation elasticity modulus and indentation creep we…
Synthesis and characterisation of ZnO nanoparticles embedded in glucose and PVA matrix
Zinc oxide (ZnO) nanoparticles have been synthesised through chemical bath deposition(CBD) method using glucose and poly vinyl alcohol (PVA) respectively as capping agent. The XRD, HRTEM and UV-Visible characterisation techniques were employed. Tauc’s plot of PVA capped sample yield direct band gap of 5.72eV. Blue shi…
ارزیابی ژئوشیمیایی سازند گرو در برش تنگ شنک واقع در جنوب الیگودرز
به منظور ارزیابی ژئوشیمیایی سازند گرو در برش تنگشنک واقع در جنوب شهر الیگودرز، تعداد 14 نمونه از رخنمونهای سطحی جمعآوری و مورد بررسی قرار گرفت. بر اساس ارزیابیهای مقدماتی با استفاده از دستگاه پیرولیز راک اول II، نتایج بدست آمده حاکی از این است که سازند گرو از لحاظ غنی و محتویات مواد آلی بسیار خوب بوده و پتانسیل هی…
Analisis Proses Kapabilitas Produksi Pipa Electrical Resistance Welded (ERW) Jenis Perabot DI PT XYZ
Salah satu metode untuk memonitor proses produksi dengan diagram kontrol adalah dengan Statistical Process Control (SPC). PT XYZ merupakan produsen pipa baja terbesar di Indonesia berdasarkan kapasitas produksi. Meskipun sudah melakukan perbaikan. kualitas, tetap masih ada produk yang cacat karena tidak memenuhi karak…
In memory of Eduard Vakarin
International audience
AN INVESTIGATION FOR EFFECT OF FIN FACE GEOMETRY AND NUMBER OF FIN ON HEAT TRANSFER OF THE COOLER PLATE WITH FINITE ELEMENT ANALYSIS
Ürün geliştirme ve iyileştirmede, Bilgisayar Destekli Mühendislik (BDM) sürekli prototip üretimini azaltıp, ürün maliyeti azaltmakla birlikte ürün kalitesini arttırmaktadır. Genellikle, BDM uygulamaları, tasarımı yapılan ürünün analizi ve simülasyonu şeklinde yapılmaktadır. Örneğin, BDM ile otomobil, elektronik, imala…